TPS voltage ?

Mads B (dk) · Post by **Mads B (dk)** » Tue Apr 08, 2008 1:27 am

Hi

What TPS voltage do you get when you floor it.... ?
i only get 3.84V isnt 5V the correct voltage ?

Regards Mads

sorry for the bad english

Hendrick301 · Post by **Hendrick301** » Tue Apr 08, 2008 1:34 am

i get around the same voltage...

although i beleve it is incorrect. Ive been suspecting the tps sensor since last week.

Mads B (dk) · Post by **Mads B (dk)** » Tue Apr 08, 2008 7:53 am

Hendrick301 <--- maybe ist normal on this engines ?

forgot the mention the its a Ca18det engine

Matt · Post by **Matt** » Tue Apr 08, 2008 1:54 pm

I can double check if CA18 should be correct.

Z31 doesnt have a variable TPS input (only switch). Shouldn't report voltage. If it does for Z31 then I can make NIStune ignore it

Hendrick301 · Post by **Hendrick301** » Tue Apr 08, 2008 2:03 pm

Matt wrote:I can double check if CA18 should be correct.

Z31 doesnt have a variable TPS input (only switch). Shouldn't report voltage. If it does for Z31 then I can make NIStune ignore it

ok, cool. how can i make it ignore it? it does read a voltage although its off at times. at idle it says "TPS ON" and goes off when you hit the gas

Matt · Post by **Matt** » Tue Apr 08, 2008 2:55 pm

I'll put a fix in the next software build to ignore R31/Z31 TPS voltage parameter reported

The firmware has a consult table which must have a TPS entry in there by accident

datsunboy · Post by **datsunboy** » Tue Apr 08, 2008 3:30 pm

so for the CA18.....what should the voltage be at fully closed, and fully open positions?
Im getting 0.3volts at fully closed (but im running a SR20 TPS.....so may be wrong????)

Matt · Post by **Matt** » Wed Apr 09, 2008 2:51 pm

sounds like it might be wrong

streetbike did a log only last week with the CA18 ECU and has valid (upto 4.12 volts) TPS readings
viewtopic.php?t=306&start=30

I get about upto 2.5 volts on my bench with CA18 before my input voltage maxes out

Mads B (dk) · Post by **Mads B (dk)** » Thu Apr 10, 2008 1:12 am

datsunboy <---

i get 0.44v closed on my ca18det with standard TPS

jey_253 · Post by **jey_253** » Thu Apr 10, 2008 3:56 am

I played with my tps sensor and noticed the the min/max voltage depends on how the sensor is manually adjusted. .44 was the lowest i remember

datsunboy · Post by **datsunboy** » Thu Apr 10, 2008 7:49 am

ok.
looking throught that last guys log file.....he was getting 0.4 most of the time....and 0.38 occasionally

Matt · Post by **Matt** » Thu Apr 10, 2008 11:34 am

yeah that must be the minimum his ECU is reading in from TPS

0.4
0.4
0.38
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.4
0.42
0.66
0.72

Maximum values about 4.12

1.1
1.14
1.2
1.28
1.34
1.38
1.4
1.44
1.5
1.6
1.82
1.98
2.26
2.52
3.04
3.4
3.86
4.12
4.12
4.12
4.12